>> yes. the crescent wrench is good and this is a perfect example of how to have it so you can loosen it up and use it when you need it. >> okay. let's go inside to talk about fire safety. many of the issues here relate to fire, for example, we have a little smoke detector and i see you brought one here, a carbon monoxide smoke detector. >> this is a combination of smoke and carbon monoxide detector. they are required in single homes now and in apartment buildings. if gas appliance is not burning properly this will alert you before the fumes buildup and will affect you negatively.